Perhaps you should try some spelling variations:
"e factor" » "e factors", "one factor", "age factor", "_ factor", "a factor", "3 factor", "e factsr"
"de faits" » "des faits", "de fait", "les faits"
"de facto" » "d_ facto", "da facto", "d3 facto", "de facts"
"e fact" » "_ fact", "a fact", "3 fact"

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (("e factor") OR ((((("de facto") OR ("de faits"))) OR ("e fact")))).
• Removing quotes may allow a broader search: (( e factor ) or ((((( de facto ) or ( de faits ))) or ( e fact )))).
• Adding a wildcard symbol may retrieve word variants: (("e factor") or ((((("de facto") or ("de faits"))) or ("e fact"))))*.